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The XDD file is an XML file used to define the indexes and various record schemas present in a data file. You should have a working knowledge of XML and a solid knowledge of the data structure to manually create an XDD.
The following sections describe the various tags needed to compose a complete XDD file. Remember that XML tags and their attributes are case-sensitive.
XDD File Structure
The example below shows the basic structure of an XDD. The elements listed are defined in more detail in the sections that follow.
<table>
<key>
<part> </part>
...
More <part> elements
...
</key>
<filters>
<field> </field>
...
More <field> elements
...
<filter>
<"Operator">
<field> </field>
<value> </value>
</"Operator">
</filter>
...
More <filter> elements
...
</filters>
<schema>
<field> </field>
...
More <field> elements
...
</schema>
...
More <schema> elements
...
</table>
See Also
